On the other hand it is not nearly as dangerous as alcohol, tobacco, or fast food.”
Tobacco and fast food are more dangerous than pot? Surely you jest. When was the last time someone smoked a cigarette and ate a hamburger from Mickey D’s and then was driving a car which was involved in an auto accident in which someone was injured or killed?
Tobacco and fast food kill hundreds of thousands every year through diseases (cardiac disease, diabetes, lung cancer, emphysema). All car accidents kill 30,000 a year total, of these a tiny fraction involve pot. So yes, cigarettes and MacDonalds are bigger killers.
I'd expect there are quite a few instances of that sequence of events happening.